One arm of a Michelson interferometer utilizing light with λ=500 nm contains a cell 7.50 cm long between plane parallel windows. How many fringe shifts would be observed if all the air were evacuated...

Newton’s rings are observed by reflected light of wavelength 589 nm. The central area is dark and is surrounded by light and dark circles. Find the thickness of the air film at the fourth bright circle...

The question has to do with the Schrodinger equation in one dimension and using the propagator. I have gotten an integral but it has to be solved to get the final solution which I can't get. The integral...